Jerry’s father, Leon Orbach, was a Jewish immigrant, born in Szczecinek, West Pomeranian Voivodeship, Poland. Jerry’s mother, Emily C. (Olexy), was born in Pennsylvania, to Polish-Lithuanian (Catholic) parents. Jerry was raised Catholic.

Jerry’s paternal grandparents were Isidore Orbach (the son of Lesser Orbach and Annie) and Bertha. Isidore and Bertha were Jewish immigrants from Neustettin, Germany (today in Szczecinek, Poland).

Jerry’s maternal grandfather was Alexander Frank Olexy (the son of Frank Olexy). Alexander was a Catholic immigrant, from Bartlovka, Poland.

Jerry’s maternal grandmother was Suzanne/Susanna Sophia Klaube/Klauba/Klonla (the daughter of Stanley Klauba and Ursula Butkus). Suzanne was a Catholic immigrant, from Lithuania. Stanley was the son of John Klauba and Elizabeth Swentecki.

The book Jerry Orbach, Prince of the City (2011), by John Anthony Gilvey, states that “Susanna’s mother [Jerry’s matrilineal great-grandmother] was a Jewish orphan who had been raised by a Lithuanian Catholic family”. It is not clear if this information has been verified/documented.